| All Patents in class 451/152 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 79,683 | Jul. 07, 1868 | J.M. Poole | Machine for Turning Cylinders | metal lathes |
| 99,000 | Jan. 18, 1870 | J.M. Poole | Grinding Machine | cylindrical grinders |
| 107,894 | Oct. 04, 1870 | E.S. Fernald | Improvement in knife-grinding machines | cutter grinding |
| RE7,240 | Jul. 25, 1876 | J.M. Poole | Machines for Grinding Rollers | profile and contour grinders |
| RE7,978 | Dec. 04, 1877 | J.M. Poole | Machine for Grinding Objects Cylindrically | cylindrical grinders |
| 667,321 | Feb. 05, 1901 | M.L. Keyes | Edge Tool Grinder | sharpening machines |
| 879,277 | Feb. 18, 1908 | A.B. Landis | Grinding-machine | grinders |
| 908,142 | Dec. 29, 1908 | P.H. Root | Lawn Mower Grinder | tool grinders |
| 1,723,852 | Aug. 06, 1929 | F.S. Haas | Grinding Machinery | grinding machines |
| 1,965,235 | Jul. 03, 1934 | F.S. Haas | Grinding Machine | grinding machines |
| 3,302,336 | Feb. 07, 1967 | C.J. Bowman | Workpiece Support for Grinding Machine | cylindrical grinders |
